moderator jim lehrer will start each segment off by asking a question. he will give each candidate two minutes to answer the question, and then they'll use the remainder of the time to have a discussion about the topic at hand. so that's how it's going to work. of course, both of these candidates putting the final touches on their debate preparations. they're being incredibly tight-lipped, which, of course, is frustrating to those of us in the media about how exactly these debate preparations are going but both ann romney and first lady michelle obama will be there tomorrow night in denver. one more interesting note, martin, it is the first couple's 20th anniversary tomorrow night. they will be together, they will be together in denver, and they will have a proper celebration this weekend. >> wow. celebrating and working at the same time. nbc's kristin welker. thanks so much. we'll be right back. [ male announcer ] eligible for medicare? that's a good thing, but it doesn't cover everything. only about 80% of your part b medical expenses. the rest is up t